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PSEN sl-1.0p 3.1
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The power supply must meet the regulations for extra low voltages with protective sep-
aration (SELV, PELV).
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The inputs and outputs of the safety switch must have a protective separation to
voltages over 60 VDC.
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Ensure the wiring and EMC requirements of EN 60204-1 are met.
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When connecting in series, make sure you comply with the wiring technology require-
ments (DIN EN 60204-1) and manipulation protection requirements (EN ISO 14119).
Guidelines for cable length
The max. cable length depends on the voltage drop at the safety switches. The level of
voltage drop is determined by the:
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Cable resistance
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Current of the device and the current load of the outputs
If the level of the supply voltage at the device connector falls below the minimum permitted
value (see Technical details:
ing actuator [
registers an error when guard locking.
Possible remedies:
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Set the supply voltage constantly to the upper tolerance range (see Technical details:
System with normal actuator [
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Select a higher conductor cross section
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Reduce load at the outputs, e.g. with evaluation device PNOZ e1.1p
Recommended cable cross sections
Prerequisite:
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Supply voltage: 24 V
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Cable type: LiYY 8x0.25 mm² (79 Ohm/km) from Pilz
Max. load per safety output
Cable length
If cable lengths greater than those stated in the table are required, please contact Pilz.
Pin assignment
Operating Manual PSEN sl-1.0p 3.1
1003389-EN-04
INFORMATION
Only use safety relays with a 24 VDC supply voltage. Safety relays with a
wide-range power supply or in AC device versions have internal potential
isolation and are not suitable as evaluation devices.
System with normal actuator [
28]), the locking magnet is no longer activated reliably. The "Lock" LED
25],
System with free-moving actuator [
100 mA
45 m
8-pin M12 connector
25],
System with free-mov-
28]).
500 mA
24 m
12
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